ZWB2 UV Filter is typical optical filter which allow specific ultraviolet pass, absorb visible light, but can’t block all infrared light.
Here is simple test by phone torch which showed this:
Product link:
ZWB2 UV Filter, Selective absorption type, 365nm Ultraviolet Glass
Shenzhen Hengda Liyuan Optoelectronics is focus on optical coating and optical filters solution, can provide but cut-off type glass and selective Absorption type glass.
- Cut-off Type Glass：Ultraviolet Glass, Golden(Yellow) Glass, Red Glass, Infrared Glass
- Selective Absorption Type Glass: Ultraviolet Glass, Violet Glass, Green Glass, Golden(Yellow)Glass, Red Glass, Infrared Glass, Protective Glass and Heat absorbing Glass.